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Method and system for realizing looped network uplink protection

A link and ring network technology, which is applied to the implementation method and system field of ring network uplink protection, can solve the problems of inability to provide ring network uplink protection, etc., and achieve the effect of small changes and guaranteed switching speed

Active Publication Date: 2015-04-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention provides a method and system for realizing uplink protection on a ring network to solve the problem that the prior art cannot provide uplink protection on a ring network

Method used

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  • Method and system for realizing looped network uplink protection
  • Method and system for realizing looped network uplink protection
  • Method and system for realizing looped network uplink protection

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0067] Such as Figure 5 As shown, this embodiment uses the master node as the executive body to describe the implementation method of uplink protection, including the following steps:

[0068] Step S501, the active uplink works normally, and the reserved field in the EAPS message (hello / flush message) sent by the master node is the initial value 0x00;

[0069] Step S502, the master node detects the failure of the active uplink, and the value of the reserved field carried in the EAPS message (hello / flush message) sent thereafter is 0x01, indicating that the active uplink is abnormal;

[0070] Step S503, the master node detects whether it has received the flush message carrying the 0x02 identifier sent by the standby node, if so, execute step S505; otherwise, execute step S5054;

[0071] Step S504, the standby uplink is temporarily unavailable;

[0072] Step S505, the master node refreshes the forwarding table of the master-slave port;

[0073] Step S506, when the active upl...

Embodiment 2

[0079] Such as Figure 6 As shown, this embodiment uses the backup node as the execution subject to describe the implementation method of uplink protection, including the following steps:

[0080] Step S601, after the backup node is started, it receives the EAPS message sent by the master node, and blocks the backup uplink;

[0081] Step S602, when the standby node detects that the EAPS message sent by the master node carries the 0x01 flag, or does not receive it within a set period of time (for example: within twice the fail-period) Any message sent by the master node determines that the active uplink is faulty;

[0082] Among them, if the backup node does not receive any message sent by the master node within the set time period, the master node may fail or the ring network is disconnected. At this time, the master node cannot notify the backup node to switch the uplink, so the The standby node detects and judges by itself.

[0083] Step S603, the standby node opens the s...

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Abstract

Disclosed is a method for protecting a ring network uplink, including: selecting a transit node as a standby node in an Ethernet Automatic Protection Switching (EAPS) ring network, and specifically including: when the standby node detects that a primary uplink connected to a master node has failed, a standby uplink connected to the standby node is opened and a forwarding list update message is sent to the other nodes in the EAPS ring network, with the identification information that the standby node is starting the standby uplink being added into a reserved field of the message. Also accordingly disclosed is a system for protecting a ring network uplink. The method in the present invention carries out redundancy protection on the uplink by way of modifying the reserved field of the EAPS protocol and sending a message containing uplink control and management information.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and system for realizing uplink protection on a ring network. Background technique [0002] EAPS (Ethernet Automatic Protection Switching, Ethernet Automatic Protection Switching) is an Ethernet ring protection technology proposed by Extreme Networks, and was standardized by IETF as RFC3619 in 2003. EAPS technology can be used to set up highly reliable elastic metropolitan area network (MAN) and local area network (LAN) with lower cost. [0003] The main technical features of EAPS include: a fault recovery time of less than 1 second, usually within 50 milliseconds, which can provide a fast recovery capability similar to a SONET ring; each segment node in the ring network can be upgraded independently, and does not require each ring network The interface rate of the node must be consistent; the physical ring and the logical domain can be independent of each other;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/437H04L12/24
CPCH04L12/437
Inventor 刘杨
Owner ZTE CORP
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